A replacement tray for the American SNES Jr. that lets you use games imported from Japan without modifying your original cartridge tray.
Print it with the slot at the bottom to ensure that the top curve is correct. It will require support material to be enabled in your slicer. I tried out organic supports and it went pretty well.
I've also uploaded a version that uses less support and actually prints flat on the build plate. It requires two additional feet to be printed that sit on both sides of the cart slot.
The author marked this model as their own original creation.